Abstract: A coating method and apparatus for coating the inner surface of a long tube of small diameter, specifically tubes for a condenser. The coating is a type of spray coating wherein a long flexible supply hose, longer than the long tube to be coated, is reciprocated in the long tube with a spray nozzle attached to the tip thereof for spraying the paint by the action of compressed air, from one end of the long tube to the other end thereof while spraying the paint in atomization. The long flexible supply hose of double structure or sometimes of triple structure is composed of a short heating pipe portion adjacent to the spray nozzle and a long flexible hose portion. The paint and compressed air supplied through separate passages in the supply hose are heated to a predetermined temperature by heating means, for example, a sheathed electrical heater wound about an inside pipe of the heating pipe portion upstream of where the paint is sprayed.

Abstract: An ultralean fuel mixture ignition and induction system is disclosed in which very lean fuel-air mixtures are used in internal combustion engines by means of a novel method and apparatus which greatly increases the burning rate of extremely lean mixtures to thereby prevent afterfire and backfire which would otherwise result from these lean mixtures when used in an engine, this same improvement in burning rate being able to provide improved fuel economy in that less fuel is required per combustion event and it is also able to provide better control over exhaust emission products in that combustion is cooler and more complete. The increased burning rate producing these effects is achieved when fuel that is being directly injected by conventional methods is routed through a pyrolysis cell and a cooler on its way to the combustion chamber, the fuel being thereby stripped of some of its hydrogen and being thereby impelled along with the hydrogen into the cylinder during the compression cycle.

Abstract: A portable battery-powered electric smoke generator for simulating the sm of a fire for training purposes includes a tubular housing enclosing a rechargeable battery power supply having terminals connected to the ends of a tubular metallic coil filled with a vaporizable smoke producing liquid. One end of the tubular coil communicates with a smoke discharge port at one end of the housing. The discharge port is sealed by a fusible disk and communicates with an apertured smoke release cup. An electric switch arrangement, either thermal or electronic, is provided on the housing in the circuit between the coil and power supply for energizing the tubular coil for a time sufficient to superheat the vaporizable liquid therein. The heat of the tubular coil melts the fusible disk to release the superheated liquid through the smoke release cap into the atmosphere as a vapor simulating smoke. The liquid may be mineral oil, polyethylene glycol 200 or propylene glycol.

Abstract: A superheated vapor generator including a porous material substantially filling an annular space between two concentric spaced apart tubular inner and outer electrodes connected across a power source. A pump is provided to pump a predetermined quantity of liquid into the porous material to temporarily complete the circuit through the electrodes and generate superheated vapor or steam. Since the liquid itself completes the circuit, no switches or controls are required. Labyrinthe passages between the pump and the inlet to the annular space and between the interior surface of the inner electrode and a tubular steam discharge outlet prevents dangerous current leakage and assure generation of superheated vapor. An electrically grounded porous metal plug in the vapor outlet minimizes electrical shock hazards. The vapor generator is held in the hand and can be used for setting or treating human hair.

Abstract: A hand held apparatus for the vapor polishing of plastic surfaces by movement of the apparatus over a plastic surface to be polished includes a body portion defining a vaporizing chamber. A container for plastic solvent, such as methylene chloride, is mounted on one side of the body for flow of solvent into the chamber when the apparatus is positioned with the container disposed above the chamber, with the solvent flow being interrupted when the apparatus is inverted to dispose the container below the chamber. A thermostatically controlled electric heating element is disposed in the chamber for vaporizing the solvent. An open-end guide tube projects from the opposite side of the body and is in fluid communication with the chamber. The guide tube opens downwardly when the apparatus is positioned with the container disposed above the chamber for directing the vaporized solvent to the plastic surface to be polished.

Abstract: An electrically heated spray nozzle assembly adapted to be mounted upon an automotive vehicle in a position to direct a fluid spray upon the windshield thereof includes a hollow angled pipe having a fluid inlet at one end and a spray nozzle at its other end. The pipe is enclosed in a housing made of heat-insulating thermoplastic material and a pill-shaped PTC heating element is mounted in a downwardly open chamber in the housing below the nozzle. The element is in contiguous heat exchange relationship with the pipe and nozzle and the power supply connections thereto pass through a plastic closure element closing the downwardly open chamber. The housing is circumferentially grooved for releasable engagement with the rim of an opening in the vehicle body. The PTC element has its temperature-resistance curve rising sharply at or about 0.degree. C. with its steepest portion below 50.degree. C.

Abstract: An internally heated injection molding machine nozzle which permits heater removal and replacement without the necessity of removing the nozzle from the mold. The nozzle also reduces inventory requirements by having interchangeable components. The nozzle comprises a shank housing with interchangeable shanks and bodies mounted at the forward end and a removable cap at the rearward end together with a heater retaining plug. The heater may be removed from the rear merely by removing the cap and plug while the nozzle is still mounted in the mold.

Abstract: An electrically heated spray nozzle assembly is mounted upon a vehicle in position to direct a fluid spray onto the windshield thereof. The spray nozzle assembly includes a hollow angled pipe having a fluid inlet at one end and a spray nozzle at its other end. The pipe is enclosed in a housing made of heat insulating thermoplastic material. A PTC heating element is mounted in the housing below the nozzle, contiguous to and in heat exchange with the nozzle and the pipe. The housing is circumferentially grooved for releasable engagement with the rim of an opening in the hood of the vehicle. The PTC heating element has its temperature-resistance curve rising sharply at or about 0.degree. C with its steepest portion below 50.degree. C.

Abstract: In apparatus for spraying heat responsive materials, a serpentine path is provided so that a flow of compressed air or an inert gas first traverses the inside surface of the housing in order to maintain the outside surface of the apparatus in a relatively cool condition. The compressed air or inert gas continues to flow along its serpentine path, being gradually heated, and then is centrally discharged together with the material to be sprayed which may, for example, be a powder in the form of a pure resin or a mixture. In order to prevent "powder balling" or "spitting" of the resin as it is discharged, baffle means are provided surrounding the nozzle so that the heated compressed air or inert gas does not come into contact with the resin until it is in a mixing chamber that is downstream of and away from the nozzle.

Abstract: A device for heating lather dispensed from an aerosol can comprises a housing enclosing a heat sink having lather directing channels establishing fluid flow communication between an entrance orifice adapted to receive the outlet nozzle of the can and an exit orifice for delivering heated lather. The heat sink is heated by a thermostatically controlled electric heating element and a male connector on the housing closely adjacent the inlet orifice allows the device to be plugged into an electrical receptacle for heating the heat sink to a predetermined temperature prior to use. The heat sink has a thermal capacity to heat at least three grams of lather foam to a temperature of about 120.degree.-140.degree. F. after being plugged in for approximately one minute.

Abstract: A chassis having a walking beam undercarriage suspends a carrier in an adjustable manner. The carrier is confined for vertical travel by chassis mounted guides and serves to carry a series of liner members defining multiple burning chambers. Each chamber is served by a low pressure oil burner and exhausts a heat flow downwardly against the passing ground surface. The liner members are detachably mounted by knock-out pins for purposes of periodic servicing the carrier. Repositionable wheel assemblies on the walking beam undercarriage permit travel of the chassis in one direction during operation and lengthwise travel for passage over roadways.

Abstract: A hand held thermal electric fogging device is disclosed comprising a housing having a barrel-like connector provided thereon which is adapted to receive the valve means of an aerosol container containing the insecticide/oil solution. A plunger is movably mounted on the connector and is movable from a normal inoperative position to an operative position to open the valve means on the aerosol container so that the contents of the container are supplied to the discharge outlet of the connector. A tubular heat shield or manifold is connected to the housing and extends therefrom and has a coiled conduit positioned therein. The inlet end of the coiled conduit is connected to the outlet end of the connector so that the insecticide/oil solution is supplied to the interior of the conduit. A spray nozzle is provided on the discharge end of the conduit. An electrical heating means is positioned in the central area of the coil for heating the solution in the coiled conduit.

Abstract: Apparatus for spraying powdered materials. A spray gun for applying hot powdered thermoplastic materials to a substrate to be coated may be constructed in such a fashion as to have no moving parts. A first fluid amplifier section inspirates the powdered material and cool air from the outside atmosphere. A second fluid amplifier section also inspirates outside air. This air is heated as it is inspirated. A transition section connects the two fluid amplifier sections. The powdered material inspirated by the first fluid amplifier section mixes with the heated air inspirated by the second fluid amplifier section. This causes partial melting of the powdered material so that as it exits from the second fluid amplifier toward the substrate to be coated, the material is in a condition to allow more uniform coating of the substrate.